181004099 has 2 divisors, whose sum is σ = 181004100. Its totient is φ = 181004098.

The previous prime is 181003987. The next prime is 181004107. The reversal of 181004099 is 990400181.

It is a strong prime.

It is an emirp because it is prime and its reverse (990400181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181004099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (181006099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90502049 + 90502050.

It is an arithmetic number, because the mean of its divisors is an integer number (90502050).

Almost surely, 2^181004099 is an apocalyptic number.

181004099 is a deficient number, since it is larger than the sum of its proper divisors (1).

181004099 is an equidigital number, since it uses as much as digits as its factorization.

181004099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 181004099 is about 13453.7763843465. The cubic root of 181004099 is about 565.6695526458.

The spelling of 181004099 in words is "one hundred eighty-one million, four thousand, ninety-nine".